explain SELECT count(distinct ws_order_number) as order_count, sum(ws_ext_ship_cost) as total_shipping_cost, sum(ws_net_profit) as total_net_profit FROM web_sales ws1 JOIN customer_address ca ON (ws1.ws_ship_addr_sk = ca.ca_address_sk) JOIN web_site s ON (ws1.ws_web_site_sk = s.web_site_sk) JOIN date_dim d ON (ws1.ws_ship_date_sk = d.d_date_sk) LEFT SEMI JOIN (SELECT ws2.ws_order_number as ws_order_number FROM web_sales ws2 JOIN web_sales ws3 ON (ws2.ws_order_number = ws3.ws_order_number) WHERE ws2.ws_warehouse_sk <> ws3.ws_warehouse_sk ) ws_wh1 ON (ws1.ws_order_number = ws_wh1.ws_order_number) LEFT OUTER JOIN web_returns wr1 ON (ws1.ws_order_number = wr1.wr_order_number) WHERE d.d_date between '1999-05-01' and '1999-07-01' and ca.ca_state = 'TX' and s.web_company_name = 'pri' and wr1.wr_order_number is null limit 100;
